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  • Diamantina Developmental Road Dajarra Mount Isa improvements
  • Central Queensland Region
Location
North-west of Dajarra and north-east of Windorah
Timing
Progressive works commenced in September 2024.
Status
Construction

Diamantina Developmental Road (Dajarra – Mount Isa and Quilpie – Windorah), package of safety improvements

Safety and reliability on the Diamantina Developmental Road between Dajarra and Mount Isa and Quilpie to Windorah will be improved through a package of targeted upgrades. These will be delivered in sections between 50km and 130km north-west of Dajarra and about 2km north-east of Windorah.

Works include rehabilitation, widening and strengthening priority sections of pavement, widening approaches to Waverley Creek bridge and upgrading aged drainage structures.

The package of works includes 5 separate projects that will be delivered progressively to improve safety and reliability for everyone who uses this key link. This includes remote communities who rely on the road to access goods and essential services such as health, education and employment.

The road is also an important route for the movement of livestock and freight, mining and outback tourism.

Benefits

  • Contributes to regional growth
  • Contributes to economy
  • Improves network reliability
  • Improves safety
  • Reduces travel time

Key features

  • Rehabilitate, widen and strengthen priority sections of pavement to 8m.
  • Widen approaches to Waverley Creek bridge.
  • Upgrade aged drainage structures.
  • Provides additional overtaking opportunities.
  • Improves travel times and wet weather access.

Funding

The Australian Government and Queensland Government have jointly funded (50:50) under the Road Safety Program:

  • Diamantina Developmental Road (Dajarra – Mount Isa), overtaking opportunity – $2.5 million. Investment ID 3027035

The Queensland Government has fully-funded:

  • Diamantina Developmental Road (Dajarra – Mount Isa), Waverley Creek, northern approach, undertake safety improvements – $1.416 million. Investment ID: 3015377
  • Diamantina Developmental Road (Dajarra – Mount Isa), replace corrugated steel pipes – $1.2 million. Investment ID: 3012103
  • Diamantina Developmental Road (Quilpie – Windorah) (Section 1), Long Crossing to Windorah, widen pavement – $2.454 million. Investment ID:2587385.
  • Diamantina Developmental Road (Quilpie – Windorah) (Section 2), pavement rehabilitation – $4.5 million. Investment ID: 2983419.

Total investment
$12.07 million
Australian Government
$1.25 million
Queensland Government
$10.82 million

Current status

Construction started in September 2024 and all 5 projects are being delivered progressively by local road crews from Boulia Shire Council.

  • Investment ID: 3027035 – Completed February 2025
  • Investment ID: 3015377 – Completed June 2025
  • Investment ID: 2587835 – Construction commenced January 2025
  • Investment ID: 3012103 – Construction commenced March 2025
  • Investment ID: 2983419 – Construction commenced May 2025

Project location map 1 – Dajarra to Mount Isa

The map shows the locality of three projects being delivered progressively on the Diamantina Developmental Road (Dajarra – Mount Isa) to improve safety on this road. The road is located between the townships of Dajarra and Mount Isa in far western Queensland, with the projects located in sections from around 50km to 130km north-west of Dajarra. Project location 1 is shown by a solid green line. Project location 2 is shown by a solid orange line. Project location 3 is shown by a solid dark blue line. The supporting road network including the Duchess Dajarra Road and Barkly Highway is also shown on the map.
This map shows the locality of 3 projects delivered progressively on the Diamantina Developmental Road (Dajarra – Mount Isa) to improve safety on this road. The road is located between the townships of Dajarra and Mount Isa in far western Queensland, with the projects located in sections from around 50km to 130km north-west of Dajarra. Project location 1 is shown by a solid green line. Project location 2 is shown by a solid orange line. Project location 3 is shown by a solid dark blue line. The supporting road network including the Duchess Dajarra Road and Barkly Highway is also shown on the map.

Project location map 2 – Quilpie to Windorah

This map shows the locality of 2 projects being delivered progressively on the Diamantina Developmental Road (Quilpie – Windorah) (Sections 1 and 2) to improve safety on this road. The road is located between the townships of Windorah and Quilpie in far western Queensland, with the projects located about 2km north-east of Windorah and include upgrades to the intersection at Thompson Developmental Road. Project location 1 is shown by a solid blue line. Project location 2 is shown by a solid orange line. The supporting road network including the Thompson Developmental Road is also shown on the map.
This map shows the locality of 2 projects being delivered progressively on the Diamantina Developmental Road (Quilpie – Windorah) (Sections 1 and 2) to improve safety on this road. The road is located between the townships of Windorah and Quilpie in far western Queensland, with the projects located about 2km north-east of Windorah and include upgrades to the intersection at Thompson Developmental Road. Project location 1 is shown by a solid blue line. Project location 2 is shown by a solid orange line. The supporting road network including the Thompson Developmental Road is also shown on the map.

Last updated: 30 June 2025

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